Field-Oriented Control of the Induction Motor as Part of the Shunting Locomotive Powertrain Considering Core Losses and Magnetic Saturation

The analysis of the magnetic saturation and core losses effects influence on a field-oriented controlled induction motor current and torque control quality is given. The magnetization circuit active resistance makes it possible to take core losses into account in induction motor electromagnetic processes equations. The rotor flux linkage vector magnitude and rotation angle estimation unit synthesis based on the rotor circuit equations is made considering core losses. The mutual inductance and the core losses circuit resistance estimating technique in a no-load motor mode are presented.